EP4326600A1 - Vehicule automobile equipe d'un dispositif d'impact entre la motorisation et le berceau avant - Google Patents
Vehicule automobile equipe d'un dispositif d'impact entre la motorisation et le berceau avantInfo
- Publication number
- EP4326600A1 EP4326600A1 EP22710676.2A EP22710676A EP4326600A1 EP 4326600 A1 EP4326600 A1 EP 4326600A1 EP 22710676 A EP22710676 A EP 22710676A EP 4326600 A1 EP4326600 A1 EP 4326600A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impact device
- impact
- motor vehicle
- platform
- vehicle according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/152—Front or rear frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/005—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces transversally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
- B60K5/12—Arrangement of engine supports
- B60K5/1275—Plastically deformable supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
- B62D21/152—Front or rear frames
- B62D21/155—Sub-frames or underguards
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R2021/0002—Type of accident
- B60R2021/0004—Frontal collision
Definitions
- the present invention relates to a motor vehicle equipped with an impact device between the engine and the front subframe.
- Motor vehicles generally have a front subframe comprising a rigid platform fixed to the body of the vehicle in the front compartment, at floor level, which receives on each side suspension triangles of the front wheels, and supports of the power train.
- the powertrain can include a heat engine and a gearbox, or an electric traction motor with a reduction gear.
- the transmission fixed to one end of the engine, comprises two output shafts arranged transversely behind the engine, which each drive a driving front wheel of the vehicle.
- a type of known impact protection device presented in particular by the document FR-A1 -2982829, fixed at the bottom of the heat engine, comprises a lower part arranged in front of a front edge of the platform. shape of the cradle, and an upper part arranged between this motor and a transverse wheel shaft.
- the lower part of the protection device hooks onto the front edge of the subframe, and the upper part avoids a direct impact of the drive shaft on the engine casing which could cause serious damage.
- the recoil resistance of the engine passing through an impact device resting solely on the front edge of the vehicle subframe, is limited by the hold of this device on the front edge.
- Significant deformation of the metal can be obtained with insufficient resistance, which, depending on the force of the impact, leaves too high a recoil of the engine, with risks of injury to the passengers of the vehicle.
- the object of the present invention is in particular to avoid these problems of the prior art.
- a motor vehicle comprising a motorization arranged in a compartment at the front of a vehicle according to its direction of travel, a cradle comprising a platform fixed in this compartment, an anti-roll bar fixed according to the direction vertical above the platform, and an impact device attached to a front edge of the platform, behind an impact block attached to a powertrain of this vehicle, to allow during a recoil of this power unit a support of the impact block on the impact device which deforms, this vehicle being remarkable in that the impact device comprises an upper part protruding above the platform, which during a strong deformation rests on the anti-roll bar.
- An advantage of this vehicle is that in a simple and economical way, by extending the upper part of the impact device above the platform, towards the anti-roll bar, a very strong additional support point is obtained for this device. , formed by this anti-roll bar, which causes an additional deformation of the device providing additional stiffness when the engine moves back.
- the motor vehicle according to the invention may also comprise one or more of the following characteristics, which may be combined with one another.
- the impact device is formed by plates welded to the front edge of the platform.
- the impact device may comprise an upper plate and a lower plate.
- the impact device forms a box formed by metal sheets having, in the transverse direction of the vehicle, a closed contour, which is open towards the front.
- the impact device comprises a sheet metal forming a top face of this device, which has on its rear edge a downwardly inclined tab arranged in front of a transverse part of the anti-roll bar.
- the impact device comprises a sheet forming a vertical side face, having a rear contour comprising a rounded hollow arranged in front of a transverse part of the anti-roll bar.
- the impact device comprises a sheet forming a top face of this device, which has on its front edge a cutout facing the impact block.
- the impact block has on its rear face a recess for hooking onto the impact device.
- the attachment recess is arranged opposite the notch of the impact device.
- the vehicle has a clearance between the upper part of the impact device protruding above the platform, and the anti-roll bar, which is less than 20mm.
- FIG. 1 is an overall view of a subframe of a motor vehicle according to the invention
- FIG. 2 is a detail view of the impact device of this cradle; and [Fig. 3] is a diagram showing, during an accident, the powertrain recoil restraint force as a function of its displacement.
- the upper and lower sides and the expressions above or below relate to a vertical axis linked to a vehicle resting on a horizontal surface
- the front direction AV relates to the direction of travel of this vehicle
- the right and left sides are defined looking towards the front of the vehicle.
- Figures 1 and 2 show a front subframe 2 of a motor vehicle, comprising a platform 4 fixed in the engine compartment at the level of the floor of the vehicle, receiving on each side towards the front a candle 6 for fixing a suspension.
- the platform 4 of the cradle 2 comprises two substantially parallel and horizontal sheets, interconnected on their contours to form a rigid box.
- a top plate has a downwardly sloping front face 16 terminating in a horizontal lower flange 18 forming a plane welded to the front side of a substantially flat bottom plate, to form the front edge 20 of the plate.
- -shaped cradle 4 having great rigidity.
- An anti-roll bar connecting the suspensions of the two front wheels of the vehicle comprises a part arranged in the transverse direction of the vehicle 10, which is held at its ends by bearings 12 fixed to the top of the platform 4 by screws 8, just next to the candles 6.
- the transverse part 10 is extended on each side after the bearing 12 by a forward curved part 14, the end of which is connected to the suspension.
- the bearings 12 form a very rigid connection of the anti-roll bar on the platform 4 of the cradle 2, in order to guide this bar during the significant forces which may be applied to the ends of the bar, with the strong tilting of the body. of the vehicle.
- An impact device 30 forms a small box made up of folded sheets, having in the transverse direction a closed contour, open towards the front and highly rigid, which is welded to the front edge of the platform 20, just next to the left bearing of anti-roll bar 12 and left candle 6.
- the impact device 30 comprises a lower plate 32 having to the right a vertical face 34 terminating towards the rear by a bent tab 36 welded to the inclined front face 16 of the front edge of the platform 20, and a lower face 38 welded to the plate below the platform 4.
- the impact device 30 comprises an upper plate 40 having a horizontal top face 46 extending to the left by a vertical face 42 whose base is welded to the plate of the top of platform 4, and to the right by a vertical face 44 welded to the right vertical face of the lower sheet 34.
- the top face 46 of the upper sheet 40 has on its front edge a recessed cutout forming a notch 52 which extends rearwards, and on its rear edge a downwardly inclined tab 48, which is arranged a little in front of the transverse part of the anti-roll bar 10.
- the right vertical face 44 of the upper plate 40 has a rear contour re forming a rounded hollow 50 which is arranged a little forward of the transverse part of the anti-roll bar 10.
- the inclined leg 48 of the rear edge of the upper plate 40 and the rounded hollow 50 of the right vertical face 44 are arranged, with a clearance J of less than 20mm in front of the transverse part of the anti-roll bar 10.
- An impact block 60 forms a solid and rigid metal element having holes 62 arranged along the transverse direction of the vehicle, which allow solid attachment to the powertrain, just in front of the impact device 30.
- the impact block 60 has on its rear face a hollow 64 arranged in front of the top face 46 of the upper plate 40, facing the notch 52 of its front edge, which is continued downwards by a rearward-facing boss 66 , opposite the front opening of the box formed by the impact device 30, to enter it during the deformations by carrying out a hooking.
- Figure 3 presents during a major front impact on the vehicle resulting in a recoil of the powertrain, curves describing the restraint force E indicated on the vertical axis in kilo-Newton kN, as a function of the displacement D of this group indicated on the horizontal axis in millimeters mm.
- Curve 70 presents a stiffness required in a specification, and curve 72 a result measured during a digital simulation carried out for a vehicle according to the invention.
- the starting point DO at 0mm on the displacement axis D corresponds to the initial position of the powertrain.
- the small displacement of the measured force curve 72 to the fulcrum at D1 at 17mm, with a slight upward and then downward effort to zero, corresponds to the bearing of the impact block 60 on the device of impact 30, after a movement of this group which cancels the play necessary around it to allow the deflections of its elastic supports for filtering vibrations.
- the specification curve 70 includes a rapid linear effort up to point D2 at 28mm, to reach 30kN, then a lower slope which gives at the end an effort of 65kN for a total displacement of 70mm.
- the measured force curve 72 presents for a displacement of up to 40mm a value close to the demand of the specification curve 70, then beyond that a force value which exceeds this demand.
- a type of impact device 30 comprising the two plates bent and welded, and by adding rear shapes to the upper plate 40 for a similar cost, after a first displacement a support on the anti-roll bar forming a point of strong resistance, other energy-absorbing deformations are generated.
- a higher force curve 72 is obtained which makes it possible to avoid intrusions of components into the passenger compartment of the vehicle after a front impact. Compliance with front impact standards can be achieved, and passenger safety is improved.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Body Structure For Vehicles (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2104194A FR3122147B1 (fr) | 2021-04-22 | 2021-04-22 | Vehicule automobile equipe d’un dispositif d’impact entre la motorisation et le berceau avant |
| PCT/FR2022/050316 WO2022223894A1 (fr) | 2021-04-22 | 2022-02-22 | Vehicule automobile equipe d'un dispositif d'impact entre la motorisation et le berceau avant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4326600A1 true EP4326600A1 (fr) | 2024-02-28 |
Family
ID=76159597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22710676.2A Pending EP4326600A1 (fr) | 2021-04-22 | 2022-02-22 | Vehicule automobile equipe d'un dispositif d'impact entre la motorisation et le berceau avant |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12084114B2 (fr) |
| EP (1) | EP4326600A1 (fr) |
| CN (1) | CN117203116A (fr) |
| FR (1) | FR3122147B1 (fr) |
| WO (1) | WO2022223894A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022152260A (ja) * | 2021-03-29 | 2022-10-12 | 本田技研工業株式会社 | サブフレーム |
| FR3153316A1 (fr) | 2023-09-21 | 2025-03-28 | Psa Automobiles Sa | Vehicule automobile avec protection antichoc du groupe motopropulseur |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2676407A1 (fr) * | 1991-05-15 | 1992-11-20 | Peugeot | Agencement d'une partie avant de vehicule automobile deformable en cas de choc frontal du vehicule. |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT311772B (de) | 1970-08-11 | 1973-12-10 | Gerlach Werke Gmbh | Abfallzerkleinerer |
| JP2963749B2 (ja) * | 1990-09-26 | 1999-10-18 | マツダ株式会社 | 自動車の前部車体構造 |
| JP3432578B2 (ja) * | 1994-03-09 | 2003-08-04 | 本田技研工業株式会社 | 自動車のサブフレーム |
| US5605353A (en) * | 1995-08-09 | 1997-02-25 | General Motors Corporation | Vehicle chassis with energy management |
| US6276484B1 (en) * | 1999-09-30 | 2001-08-21 | Daimlerchrysler Corporation | Impact bar |
| US7726672B2 (en) * | 2007-06-18 | 2010-06-01 | Nissan Motor Co., Ltd. | Vehicle body front part structure |
| US8672393B2 (en) * | 2011-01-26 | 2014-03-18 | Honda Motor Co., Ltd. | Front vehicle body structure |
| JP5329576B2 (ja) * | 2011-01-26 | 2013-10-30 | 本田技研工業株式会社 | 車両の車体前部 |
| FR2982829B1 (fr) | 2011-11-18 | 2014-01-03 | Peugeot Citroen Automobiles Sa | Dispositif de protection du moteur d'un vehicule automobile en cas de choc frontal |
| JP5958005B2 (ja) * | 2012-03-26 | 2016-07-27 | マツダ株式会社 | 自動車のフロントサブフレーム構造 |
| US9045172B2 (en) * | 2013-07-25 | 2015-06-02 | Ford Global Technologies, Llc | Powertrain catcher bracket |
| EP3620354B1 (fr) * | 2013-12-18 | 2021-06-02 | Volvo Car Corporation | Structure frontale d'un véhicule |
| JP6237747B2 (ja) * | 2015-11-11 | 2017-11-29 | マツダ株式会社 | フロントサブフレーム構造 |
| JP6288044B2 (ja) * | 2015-11-11 | 2018-03-07 | マツダ株式会社 | フロントサブフレーム構造 |
| JP6457959B2 (ja) * | 2016-01-28 | 2019-01-23 | 本田技研工業株式会社 | 車体前部構造および車体前部構造の衝撃吸収方法 |
| JP6601424B2 (ja) * | 2017-01-13 | 2019-11-06 | トヨタ自動車株式会社 | 車両の前部構造 |
| JP6565945B2 (ja) * | 2017-01-26 | 2019-08-28 | トヨタ自動車株式会社 | 車両の前部構造 |
| JP6481704B2 (ja) * | 2017-03-27 | 2019-03-13 | マツダ株式会社 | フロントサブフレーム構造 |
| KR102730525B1 (ko) * | 2019-02-12 | 2024-11-13 | 현대자동차주식회사 | 차량용 고전압 배터리 보호장치 |
| FR3094286B1 (fr) * | 2019-03-26 | 2024-06-28 | Psa Automobiles Sa | Ensemble d’impacteur et de contre-impacteur de vehicule automobile pour choc frontal |
| EP3972888B1 (fr) * | 2019-05-20 | 2025-12-10 | Canoo Technologies Inc. | Plateforme de véhicule électrique |
| JP7400238B2 (ja) * | 2019-07-24 | 2023-12-19 | マツダ株式会社 | サブフレーム構造 |
| FR3100402B1 (fr) * | 2019-08-29 | 2022-04-08 | Psa Automobiles Sa | Ensemble pour amortir les chocs sur une machine electrique de vehicule et procede d’assemblage associe |
| US11623692B2 (en) * | 2021-07-09 | 2023-04-11 | Volvo Car Corporation | Deformable rear crossmembers with special extrusion section design for bending down in crash loadcases |
-
2021
- 2021-04-22 FR FR2104194A patent/FR3122147B1/fr active Active
-
2022
- 2022-02-22 WO PCT/FR2022/050316 patent/WO2022223894A1/fr not_active Ceased
- 2022-02-22 US US18/555,032 patent/US12084114B2/en active Active
- 2022-02-22 EP EP22710676.2A patent/EP4326600A1/fr active Pending
- 2022-02-22 CN CN202280029793.2A patent/CN117203116A/zh active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2676407A1 (fr) * | 1991-05-15 | 1992-11-20 | Peugeot | Agencement d'une partie avant de vehicule automobile deformable en cas de choc frontal du vehicule. |
Also Published As
| Publication number | Publication date |
|---|---|
| US12084114B2 (en) | 2024-09-10 |
| US20240083509A1 (en) | 2024-03-14 |
| CN117203116A (zh) | 2023-12-08 |
| WO2022223894A1 (fr) | 2022-10-27 |
| FR3122147B1 (fr) | 2023-03-10 |
| FR3122147A1 (fr) | 2022-10-28 |
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